Spectroscopic and DFT studies of bis-3-hydroxypyridinium and bis-3-hydroxymethylpyridinium dibromides with tetramethylene linker

Bis-3-hydroxypyridinium and bis-3-hydroxymethylpyridinium dibromides with tetramethylene linker were prepared and investigated by IR, Raman, UV-Vis, 1H and 13C NMR spectroscopies and DFT calculations.173